Peak Psychology Logo

Offering psychological counselling for individuals including children (8 years and older) and Performance Psychology clinics and sessions for elite, youth/developing athletes, teams and coaches, as well as individuals striving to reach personal goals.

About us


About Peak Psychology

Founded by Registered Psychologist Marni Hietbrink, Peak Psychology believes that healthy emotional wellbeing is the cornerstone to successful relationships, good physical health and wellbeing, optimal performance outcomes, and most importantly happiness.

Peak Psychology aims to help you better understand yourself by learning strategies to help you maintain sound mental health. This will enable you to become the best version of you, all while navigating the inevitable challenges of life.


About Marni Hietbrink

MAppPsych (Sport & Exercise), BA (Psych), BPsycSci (Hons), MAPS
AHPRA Registration No. PSY0001810355


Marni has been fortunate to work with a diverse range of clients. She has spent much of her career working in private practice and has a passion for helping people feel fulfilled in life by assisting them to develop meaningful relationships and values-guided living.

On the field, she has worked with numerous athletes, coaches and sporting teams, over many different sporting codes, to help develop their mental skills so they can perform at their best while getting enjoyment out of participating in their chosen field. As an elite athlete herself she has ‘lived’ the journey of her athlete-focussed clients. She commenced her sport of rowing at High School, representing her school and state at the national level. She rowed internationally at University and completely understands the external and self-imposed pressures on athletes.

Marni holds a Master Degree in Applied Psychology (majoring in Sport and Exercise), as well as a Bachelor Degree of Psychological Science (with Honours) and a Bachelor of Arts Degree, majoring in Psychology, with a double minor in Natural Science and Sociology.


Our Services



Consultation Fees

A referral is not required, unless you want to claim on Medicare, however this will mean you pay the full fee of $130 with no rebate from Medicare. If you have Private Health Cover, you may be able to claim a portion of the cost. Please speak to your provider before booking, to determine your eligibility to claim. DVA and WorkCover clients are able to access the services of Peak Psychology.

Medicare Clients

A standard Medicare session runs for 45 – 50 minutes. Providing you have been to your GP and received a Mental Health Treatment Plan and a Referral, you will be eligible for a Medicare rebate for each session. You will be eligible for up to 20 sessions per calendar year, with a new referral required after six sessions. Medicare clients are required to pay the full fee of $130 at the time of the appointment, and the Medicare rebate of $87.45 will be processed and rebated into your nominated bank account.

Performance Psychology

Marni’s Performance Psychology Sessions are generally tailor-made specifically to suit her clients. Services may be a series of one-on-one sessions (available as face-to-face or via Skype), or you may be looking for a group workshop for your team, school, business or organisation. Anything is possible, so please contact us to discuss your performance requirements and to receive a quote.


  • Personal Stuff & Thoughts Personal Stuff & Thoughts
  • Public Awareness
Have anything to tell me? PLEASE USE THE FORM BELOW TO

Contact us

Making an Appointment


Monday – Friday: 9am – 5pm


Once you have been to see your GP, a copy of your Mental Health Treatment Plan, with a referral, will be sent to me. After I receive the paperwork, I will be in touch with you to make an appointment! Or, if you just can’t wait to chat, or if you are self-referred, feel free to contact me!
You can contact me via phone or using the Contact Form below. If calling, please make sure you leave me a message with your contact details. I will return your call as soon as I am able.


16 Abercrombie Street, Guyra NSW 2365
PO Box 188, Guyra NSW 2365
0428 296 396